Through this app and website, parents can send their kid's personalised videos direct from the North Pole.

Video messages are free, but for an additional fee parents can buy their child more detailed personalisations, views of Santa's village and news of whether they are on the naughty or nice list this year.

You can send Santa messages and get an instant response, there are unlimited personalised calls to Santa and you can even call his voicemail and leave messages, like your child's present wishlist.

Another good one is Santa's Magic Phone.

Parents who download the Santa's Magic Phone app can let their kids call or text message Santa, or contact Santa themselves to report their kids' good or bad behavior. And, parents can choose the nature of Santa's "calls," from telling a kid they have been taken off the naughty list to congratulating a child on being polite.

6: Track Santa via NORAD

For more than 60 years, the North American Aerospace Defense Command (NORAD) has been tracking Santa's whereabouts on Christmas Eve using a myriad of data collection tools, ranging from satellites to jet fighters.

The 2017 NORAD Tracks Santawebsite and apps are live now, offering a Christmas countdown, games and other activities, in addition to NORAD's iconic reports on Santa's travels come December 24.

Here is a fantastic website with lots of cool ways to interact with Santa this Christmas.

There's a countdown clock, a naughty or nice list or you can simply send Santa an email.

There's also an official Santa blog so you can keep up to date with what he's up to.

Cohen Purkis stopped by in Rose City yesterday to write Santa a letter.Jonno Colfs

Yesterday in Rose City Shoppingworld, making absolutely sure Santa was getting the message was eight-year-old Cohen Purkis and his 10-year-old brother Khy.

"We've already texted Santa," Khy said.

"But we'll write him a letter now as well."

The boys' mum Rebecca Smith said it was good to know Santa was keeping up with the technology.

"We got a text from him the other night," she said.

"Cohen didn't believe me and his eyes almost fell out of his head when I showed him. So we were having a bit of a chat to him and he was getting straight back to us."

Ms Smith said Santa was telling the boys to behave and to make sure they kept the house clean.

"He wanted to make sure there was no mess when he arrives on Christmas Eve," she said.

"So the boys will have to make sure that happens, I don't want Santa tripping and falling, you know what liability is like these days."

"And he's also got an email address if you want to get in touch that way."

Children have until December 19 to post their letters at Rose City.

Santa will personally reply to every one.

If parents don't mind having Santa around all year, they can search for Santa in the relevant phone or tablet app store. It's worth checking what ads and in-app purchases might be on offer. And who might be talking to your children.